And so is fiat. There's nothing you can do with 1, 10, 100 million USD if nobody is willing to exchange goods for it, but I don't see you call this a scam. Humans appear to be satisfied with money, even if they can't intrinsically utilize it.
You are VERY WRONG... US Dollars has the assets and the full force of the US Government / Military / law behind it, so there is some backing even if it is not enough.... Even with all this advantage, fiat currencies eventually go to zero anyways.
Bitcoin has NONE of this behind it, Bitcoin is merely another FIAT Crypto / Ponzi Scheme. NOTHING backs Bitcion but what some greater fool will pay for it. No one has come up with any use case for Bitcoin when the day comes that people will not pay for it anymore

The Crypto world is even worse, it is Ponzi schemes built on top of Ponzi schemes. We are already starting to see the very first stages of various crypto schemes blow up...